Lucid Dream Induction : Effects of Hypnotizability and Posthypnotic Suggestions on Reported Frequency
Vicki Holoubeck-Arnold
Study at a glance
AI-extracted from the abstract| Characteristics | Randomized controlled trial |
|---|---|
| Sample size | 42 |
| Population | Adults screened for hypnotic susceptibility: 13 high, 14 medium, and 15 low hypnotizables |
| Duration | 2-week baseline dream diary, then posthypnotic suggestion, then 2-week dream diary |
| Measures | Harvard Group Scale of Hypnotic Susceptibility (HGSHS:A), Group Stanford Scale of Hypnotic Susceptibility (GSHSS:C), dream diary |
| Topics | Lucid dreaming |
| Key findings | Hypnotic susceptibility level did not significantly affect lucid dream frequency (F(2,39) = .46, ns), and a posthypnotic suggestion to increase lucid dreaming did not significantly raise lucid dream frequency (F(1,39) = .36, ns). |
Abstract
The present study investigated the moderating influences of hypnotic susceptibility and posthypnotic suggestions on induction of lucid dreams. Forty two subjects - 13 high, 14 medium, and 15 low hypnotizables - were selected for inclusion in the study. All subjects were screened for hypnotic susceptibility levels initially on the Harvard Group Scale of Hypnotic susceptibility (HGSHS:A), then later on the Group Stanford Scale of Hypnotic Susceptibility (GSHSS:C). Subjects were then required to maintain a dream diary for 2 weeks, after which they were given a posthypnotic suggestion to increase their frequency of lucid dreaming. Subjects were then asked to maintain their dream diaries for another 2 weeks. A two-way analysis of variance failed to yield significant differences as a function of hypnotic susceptibility (F(2,39) = .46, ns) Similarly, the frequency of lucid dreams failed to increase as a function of the posthypnotic suggestion (F(1,39) = .36, ns). Implications for theory, practice, and future research were discussed.
Comparable studies
Other randomized controlled trials on lucid dreaming, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Lucid Dreaming Treatment for Nightmares: A Pilot Study Chronic nightmare sufferers | 2006 | Randomized controlled trial | n = 23 |
| Testing the involvement of the prefrontal cortex in lucid dreaming: A tDCS study Participants spending three consecutive nights in a sleep laboratory | 2013 | Randomized controlled trial | n = 19 |
| Effectiveness of motor practice in lucid dreams: a comparison with physical and mental practice Adults who completed an online experiment | 2015 | Randomized controlled trial | n = 68 |
| Pre-sleep treatment with galantamine stimulates lucid dreaming: A double-blind, placebo-controlled, crossover study Adults with high dream recall and an interest in lucid dreaming | 2018 | Randomized crossover trial | n = 121 |
| Studies with lucid dreaming as add-on therapy to Gestalt therapy Adults with nightmares (ICD-10: F51.5) at least twice a week | 2015 | Randomized controlled trial | n = 32 |